[FIX] prevent traceback when using the SIGIO signal

Before this commit, using the SIGIO posix signal to get server stats
would generate a traceback and was preventing the logging of server
 stats.
This was caused by a typo in the name of one property access during
destructuring.

This traceback is not critical and would not lead to server failure.

Author: ThanhDodeurOdoo

src/server.js

@@ -44,7 +44,7 @@ const processHandlers = {
                 (async () => {
                     const {
                         sessionsStats: {
-                            incomingBitrate: { audio, camera, screen, total },
+                            incomingBitRate: { audio, camera, screen, total },
                             count,
                         },
                     } = await channel.getStats();